五軸工具磨床傾斜誤差量測系統開發

Development of Measurement System of Tilt Error for Five-Axis Tool Grinders

江東信(Tung-Shen Chiang)

指導教授 ： 阮岱珈

共同指導教授 ： 李炳寅(Bean-Yin Lee)

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2013年)

摘要

隨著精密機械發展快速，用於加工切削刀具尺寸精度的要求亦越來越高，進而刀具磨床的精密度也隨之上升，而工具磨床的加工精度，其旋轉軸佔有相當大的比重，故本文將針對五軸工具磨床開發一套低成本量測設備，以提昇五軸工具磨床的加工精度。
本文使用雷射二極體與位置感測器建立一旋轉軸量測系統，此系統具有架設容易與成本低等優點，並可應用於量測旋轉軸傾斜誤差，透過自行開發的治具和軟體可達到快速消除擺設誤差以及量測數據後可快速分析的功能，用以減小旋轉軸傾斜之誤差量；如此將有效地減小旋轉軸於安裝與使用時所造成地誤差，提昇刀具研磨精度。
經實驗顯示，本系統解析度達1μm，量測重複精度達6角秒，將此系統佐以雷射干涉儀量測體積誤差，並加以分析計算，最後實際研磨驗證結果顯示六刃心徑誤差分別為0.008mm、0.005mm和0.007mm，直槽角度平均誤差量為0.003度，皆符合量測誤差範圍。

關鍵字

工具磨床 ； 線性軸 ； 旋轉軸 ； 傾斜誤差 ； 體積誤差

並列摘要

Due to rapid developments in the modern cutting technology, the demand for all kinds of high precision tools will relatively increase. The geometrical angle of tools is the most important parameter and its processing is the final manufacturing procedure. Therefore, this study is to implement a measurement system with low costs for each axis of a five-axis tool grinder. It can enhance the performance, precision, and quality of the tool grinders.
In this study, the laser diode and PSD are used to establish a rotary axis measurement system. The advantages of the measurement system are low cost and multi-functions. It can be applied to measure tilt errors of the rotary axes by the self-developed software and fixture. The fabrication errors can be eliminated quickly and tilt errors of the rotary axes can be reduced by the rapid analysis of measurement data. This system can effectively improve the grinding precision.
By the experimental verifications, the system resolution is 1μm and repeatability is less than 6 arc seconds. The volumetric measurement error is measured by the laser interferometer system. The experimental results of the final grinding show the core diameter errors are 0.008 mm, 0.005 mm, and 0.007 mm, respectively. The average error is 0.003 degrees for the helix angle. All of the above-mentioned errors are within the tolerance range.

並列關鍵字

tool grinder ； linear axes ； rotary axes ； tilt error ； volimetnic error

參考文獻

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